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authorLeon Krause <lk@leonkrause.com>2018-05-09 15:57:10 +0200
committerLeon Krause <lk@leonkrause.com>2018-05-10 02:42:47 +0200
commit9080e96bc81328e658a03e2cd248c06ddbf9f2ec (patch)
tree068885cd973a53889b69ce1ddb6daa7a489cd3fe
parent0f930f831410bc57d0e975b4ab73715d0d034735 (diff)
Fix keyboard focus lock-out with HTML5 canvas in iframe
-rw-r--r--misc/dist/html/default.html2
-rw-r--r--platform/javascript/engine.js4
-rw-r--r--platform/javascript/os_javascript.cpp10
3 files changed, 10 insertions, 6 deletions
diff --git a/misc/dist/html/default.html b/misc/dist/html/default.html
index 4e3515a7b6..4aa9347fec 100644
--- a/misc/dist/html/default.html
+++ b/misc/dist/html/default.html
@@ -195,7 +195,7 @@ $GODOT_HEAD_INCLUDE
</head>
<body>
<div id="container">
- <canvas id="canvas" oncontextmenu="event.preventDefault();" width="640" height="480">
+ <canvas id="canvas" width="640" height="480">
HTML5 canvas appears to be unsupported in the current browser.<br />
Please try updating or use a different browser.
</canvas>
diff --git a/platform/javascript/engine.js b/platform/javascript/engine.js
index e4839af433..e3a28083a0 100644
--- a/platform/javascript/engine.js
+++ b/platform/javascript/engine.js
@@ -161,6 +161,10 @@
actualCanvas.style.padding = 0;
actualCanvas.style.borderWidth = 0;
actualCanvas.style.borderStyle = 'none';
+ // disable right-click context menu
+ actualCanvas.addEventListener('contextmenu', function(ev) {
+ ev.preventDefault();
+ }, false);
// until context restoration is implemented
actualCanvas.addEventListener('webglcontextlost', function(ev) {
alert("WebGL context lost, please reload the page");
diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index 1b5463e40d..cb942b6bba 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -167,10 +167,9 @@ static EM_BOOL _mousebutton_callback(int event_type, const EmscriptenMouseEvent
int mask = _input->get_mouse_button_mask();
int button_flag = 1 << (ev->get_button_index() - 1);
if (ev->is_pressed()) {
- // since the event is consumed, focus manually
- if (!is_canvas_focused()) {
- focus_canvas();
- }
+ // Since the event is consumed, focus manually. The containing iframe,
+ // if used, may not have focus yet, so focus even if already focused.
+ focus_canvas();
mask |= button_flag;
} else if (mask & button_flag) {
mask &= ~button_flag;
@@ -181,7 +180,8 @@ static EM_BOOL _mousebutton_callback(int event_type, const EmscriptenMouseEvent
ev->set_button_mask(mask);
_input->parse_input_event(ev);
- // prevent selection dragging
+ // Prevent multi-click text selection and wheel-click scrolling anchor.
+ // Context menu is prevented through contextmenu event.
return true;
}